: Kip Williams <
mrk...@gmail.com>
: Have they tested centrifugal gravity?
Tested it for what?
: I sometimes wonder if it only works when you're on a body with gravity
: to start with.
Great googly moogly! Whatever would make anybody wonder
such a bizarre thing?
: In my mental experiment, I'm floating in a craft. It starts spinning.
: What would make me stop floating and obediently start sticking to a
: "floor"?
Nothing, of course. Coriolis forces would support you in place. On the
other hand, ventually, the walls would spin up the air, the air would
blow against you and slow you down wrt the wall, so the coriolis forces
would evaporate, and you'd fall to the wall. Well, unless you were right
at the spin axis, in which case there's no centrifugal forces on you
as a whole anyways, even after the air sets you to spinning.
: Am I missing something here?
Dunno. Why would anybody expect swapping reference frames would
would have any physical effects? All you're doing is describing the
same physical situation with centrifugal and coriolis forces balanced
rather than with no forces at all. Shrug. I mean, that's always the
case when you swap reference frames; same events, different description.
: I hate to sound stupid, but I know that you're decent folk who would
: stop taunting me after a few weeks.
Well OK, so that was a *little* bit taunty. But... I'm afraid I'm
in the unfortunate position of not understanding your mental model.
I realize that the one I'm working with is counterintuitive to many folk,
and I don't describe (and it's a bit hard to describe) how coriolis
forces work. So I expect my comments aren't enlightning, even though
they make perfect sense if you're already enlightened. Which goes
back to my first puzzlement above; why would an object "having gravity"
make any difference to how centrifugal and coriolis forces work? (Or,
pseusoforces, if you insist.) They are, after all, just artifacts of
choosing to use non-inertial coordinates.